CN112283423A - Pressure control device for water-based liquid medium - Google Patents
Pressure control device for water-based liquid medium Download PDFInfo
- Publication number
- CN112283423A CN112283423A CN202011264956.4A CN202011264956A CN112283423A CN 112283423 A CN112283423 A CN 112283423A CN 202011264956 A CN202011264956 A CN 202011264956A CN 112283423 A CN112283423 A CN 112283423A
- Authority
- CN
- China
- Prior art keywords
- channel
- valve body
- valve
- water
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a pressure control device of water-based liquid medium, wherein a valve body is internally provided with an installation cavity, a valve core is installed in the installation cavity, two ends of the installation cavity are respectively provided with a first channel and a second channel, both the first channel and the second channel can be communicated with the installation cavity and the outside, the valve body is also provided with a return channel, two ends of the return channel respectively extend to the outside and one side of the installation cavity close to the second channel, a control unit is used for leading hydraulic oil into the installation cavity through the first channel and controlling the pressure of the hydraulic oil, and pushing the valve core to move towards the direction close to the second channel to disconnect the return channel from the second channel, the second channel is used for introducing water-based liquid medium, the water-based liquid medium is used for pushing the valve core to move towards the direction close to the first channel to connect the return channel with the second channel, and when the return channel is communicated with the second channel, the return channel is used for flowing out, the pressure control device for the water-based liquid medium can realize the pressure control of the water-based liquid medium with low cost and ensure the control precision.
Description
Technical Field
The invention relates to the technical field of hydraulic forming, in particular to a pressure control device for a water-based liquid medium.
Background
Hydroforming refers to a plastic working technique that uses a liquid as a force-transmitting medium or die to shape a workpiece.
Hydroforming can be classified into hydroforming and hydroforming depending on the liquid medium used. The medium used for hydraulic forming is pure water or water-based liquid added with certain emulsified oil, and the medium used for hydraulic forming is hydraulic transmission oil generally. The hydraulic oil used as the forming medium has the advantages of higher viscosity, good sealing performance, no corrosion to equipment and parts, higher cost, difficult recovery, difficult cleaning and part pollution, large compression amount, low volume efficiency and large energy loss of a system. Therefore, at present, a water-based liquid medium is mostly adopted for hydraulic forming, but the water-based liquid medium has the requirements of rust prevention and certain corrosion resistance on contact elements, and the water-based liquid has low viscosity and is difficult to control pressure and flow.
Hydroforming can be classified into "active hydroforming" and "passive hydroforming" according to the forming method. The "active hydroforming" is a forming process in which a forming medium is pressurized by an external pressurizing mechanism, and a workpiece is forced to be plastically deformed by the forming medium and attached to a mold. The 'passive hydraulic forming' is that the workpiece is plastically deformed under the action of the die, and at the moment, the forming medium is passively pressurized under the action of the workpiece to play a supporting role. The forming medium pressure of "passive hydroforming" often needs to be precisely controlled and needs to be infinitely adjustable.
The passive stepless regulation of pressure generally adopts a proportional overflow valve. At present, proportional overflow valves for water-based fluids are very expensive and have high cost, and the control pressure is generally not higher than 35MPa, so that certain high-pressure 'passive hydraulic forming' occasions cannot be met.
In view of the above, it would be desirable to provide a pressure control device for water-based fluid media that is relatively low cost.
Disclosure of Invention
The invention aims to provide a pressure control device for a water-based liquid medium, which is used for solving the problems in the prior art, realizing the pressure control of the water-based liquid medium at lower cost and ensuring the control precision.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a pressure control device of a water-based liquid medium, which comprises a valve body, a valve core and a control unit, wherein an installation cavity is arranged in the valve body, the valve core is installed in the installation cavity, a first channel and a second channel are respectively arranged at two ends of the installation cavity, the first channel and the second channel can be communicated with the installation cavity and the outside, a backflow channel is also arranged on the valve body, two ends of the backflow channel respectively extend to the outside and one side, close to the second channel, in the installation cavity, the control unit is used for leading hydraulic oil into the installation cavity through the first channel, the control unit can control the pressure of the hydraulic oil led in the first channel and push the valve core to move towards the direction close to the second channel so as to disconnect the backflow channel from the second channel, and the water-based liquid medium is led in the second channel, the water-based liquid medium is used for pushing the valve core to move towards the direction close to the first channel to enable the backflow channel to be communicated with the second channel, when the backflow channel is communicated with the second channel, the backflow channel is used for outflow of the water-based liquid medium, and the hydraulic oil and the water-based liquid medium can push the valve core to reciprocate in the installation cavity and fix the position.
Preferably, the valve body includes valve body and lower valve body, go up the valve body with the lock can be dismantled to lower valve body, the installation cavity includes cavity and cavity down, go up the cavity certainly go up and be close to on the valve body the one end of valve body extends to down go up the middle part of valve body, first passageway certainly go up and keep away from on the valve body the one end of valve body extend to down with go up the cavity intercommunication, the cavity certainly down be close to on the valve body down the one end of going up the valve body extends to the middle part of valve body down, the second passageway certainly keep away from on the valve body down the one end of going up the valve body extend to with cavity down communicates, the one end of case stretches into in the cavity of going up, the other end stretches into in the cavity of going down.
Preferably, an upper sealing element is installed between the inner wall of the upper chamber and the outer wall of the valve core, a lower sealing element is installed between the inner wall of the lower chamber and the outer wall of the valve core, and both the upper sealing element and the lower sealing element are used for blocking the liquid in the first channel and the liquid in the second channel from communicating with each other.
Preferably, go up and be equipped with first screw hole on the valve body, first screw hole is in go up the valve body with link up down in the array direction of valve body go up the valve body, the valve body is corresponding down the position of first screw hole is equipped with the second screw hole, the second screw hole certainly be close to down on the valve body the one end of going up the valve body extends to down the valve body middle part, go up the valve body with the valve body passes through the bolt in proper order down first screw hole with the second screw hole is connected.
Preferably, the valve core is a T-shaped valve core, the large end of the valve core is located in the upper chamber, the small end of the valve core is located in the lower chamber, a limiting part is arranged on the second channel and used for limiting the maximum displacement of the valve core in the length direction of the second channel, and when the small end of the valve core contacts the limiting part, a gap is formed between the large end of the valve core and the upper end surface of the lower valve body; and a leakage backflow gap is arranged between the upper cavity and the lower cavity, and the leakage backflow gap is communicated with the mounting cavity and the outside and is used for guiding out hydraulic oil or water-based liquid medium between the large end of the valve core and the lower valve body.
Preferably, the upper end surface of the large end of the valve core is provided with a mounting groove, an elastic element is mounted in the mounting groove, one end of the elastic element is fixed on the inner bottom surface of the mounting groove, the other end of the elastic element contacts the inner top surface of the upper chamber, and the elastic element is always in a compression state.
Preferably, the cross section of the backflow channel is L-shaped, and the backflow channel comprises a transverse channel and a longitudinal channel, the transverse channel is perpendicular to the second channel, the transverse channel penetrates through one end, close to the second channel, of the lower chamber, and the longitudinal channel is perpendicular to and communicated with the transverse channel.
Preferably, a damper is arranged in the first channel and used for buffering the impact of the hydraulic oil on the valve core.
Preferably, the control unit comprises an oil tank, a pump set, an energy storage stabilizer, an overflow valve, a flow stabilizing valve, a pressure sensor and a proportional overflow valve, the oil tank is used for storing hydraulic oil, the oil tank is communicated with the pump set through a first pipeline, the pump set is communicated with the flow stabilizing valve through a second pipeline, the pump set is used for guiding the hydraulic oil in the oil tank into the flow stabilizing valve, the second pipeline is provided with the energy storage stabilizer and the overflow valve, the overflow valve is communicated with the oil tank through a third pipeline, the energy storage stabilizer is used for stabilizing the pressure of the hydraulic oil in the second pipeline, the overflow valve is used for limiting the pressure of the hydraulic oil and overflowing, the flow stabilizing valve is communicated with the pressure sensor through a fourth pipeline, the pressure sensor is used for detecting the pressure of the hydraulic oil flowing out through the flow stabilizing valve, and the flow stabilizing valve is communicated with the proportional overflow valve through a fifth, the proportional overflow valve is used for controlling overflow pressure, the flow stabilizing valve is communicated with the first channel through a sixth pipeline, the sixth pipeline is used for guiding hydraulic oil into the first channel, the proportional overflow valve is communicated with the oil tank through a seventh pipeline, and overflowed hydraulic oil returns to the oil tank through the seventh pipeline.
Compared with the prior art, the invention has the following technical effects:
the invention provides a pressure control device of water-based liquid medium, a control unit is used for leading hydraulic oil into an installation cavity through a first channel, the control unit can control the pressure of the hydraulic oil led into the first channel and push a valve core to move towards the direction close to a second channel to disconnect the backflow channel from the second channel, the water-based liquid medium is led into the second channel and used for pushing the valve core to move towards the direction close to the first channel to connect the backflow channel with the second channel, so that the water-based liquid medium led into the second channel flows out through the backflow channel to provide the liquid medium required by hydraulic forming, when the valve core is in a balanced state, the water-based liquid medium flowing out of the backflow channel is used for hydraulic forming, the valve core is controlled to move by a hydraulic principle, the outflow of the water-based liquid medium is controlled, the pressure control device is simple and convenient, and by means of control, the pressure control precision is guaranteed, meanwhile, the water-based liquid medium is used as a hydraulic forming medium, the cost is low, the cleaning is convenient, and the water-based liquid medium is not in direct contact with hydraulic elements such as a proportional overflow valve, so that the cost is saved and the service life of the whole device is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a pressure control device for water-based liquid media provided by the present invention;
FIG. 2 is a schematic structural diagram of a valve core in the pressure control device for water-based liquid medium provided by the invention;
in the figure: the method comprises the following steps of 1-a control unit, 2-an upper valve body, 3-a lower valve body, 4-a valve core, 5-an upper sealing element, 6-a lower sealing element, 7-a first channel, 8-a second channel, 9-an elastic element, 10-a damper, 11-a bolt, 12-a backflow channel, 13-an oil tank, 14-a pump set, 15-an energy storage voltage stabilizer, 16-an overflow valve, 17-a flow stabilizing valve, 18-a pressure sensor and 19-a proportional overflow valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a pressure control device for a water-based liquid medium, which aims to solve the technical problems of high cost and easy damage of the existing pressure control device for the water-based liquid medium.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-2, the present invention provides a pressure control device for a water-based fluid medium, including a valve body, a valve core 4 and a control unit 1, wherein an installation cavity is arranged in the valve body, the valve core 4 is installed in the installation cavity, two ends of the installation cavity are respectively provided with a first channel 7 and a second channel 8, both the first channel 7 and the second channel 8 can communicate the installation cavity with the outside, the valve body is further provided with a backflow channel 12, two ends of the backflow channel 12 respectively extend to the outside and one side of the installation cavity close to the second channel 8, the control unit 1 is used for guiding hydraulic oil into the installation cavity through the first channel 7, the control unit 1 can control the pressure of the hydraulic oil introduced into the first channel 7 and push the valve core 4 to move in a direction close to the second channel 8 to disconnect the backflow channel 12 from the second channel 8, a water-based fluid medium is used for introducing into the second channel 8, and a water-based fluid medium is used for pushing the valve core 4 to move in a direction close to the first channel 7 to make the The second channel 8 is communicated, hydraulic oil is used as a control medium, a water-based liquid medium is used as a controlled medium, the second channel 8 is used as a controlled medium pressure cavity to provide pressure for the valve core 4, the valve core 4 can be pushed to move in a reciprocating manner and be fixed in position in the installation cavity by the hydraulic oil and the water-based liquid medium, the outflow of the water-based liquid medium is controlled by controlling the movement of the valve core 4 through the hydraulic oil, the pressure control precision is ensured simply and conveniently, the control precision is ensured by means of the control of the hydraulic oil, when the pressure applied to the valve core 4 by the water-based liquid medium is smaller than the pressure applied to the valve core 4 in the direction of the hydraulic oil, the valve core 4 prevents the water-based liquid medium from entering the backflow channel 12 through the second channel 8, when the pressure applied to the valve core 4 by the water-based liquid medium is larger than the pressure applied to the valve core 4 in the direction of the hydraulic oil, the, when the valve core 4 is in a balanced state, the water-based hydraulic medium flowing out of the backflow channel 12 is used for hydraulic forming, the water-based hydraulic medium is used as the hydraulic forming medium, the cost is low, the cleaning is convenient, and the water-based hydraulic medium is not in direct contact with hydraulic elements such as the proportional overflow valve 19, so that the common proportional overflow valve 19 is used, the cost is saved, and the service life of the whole device is prolonged.
Specifically, the valve body comprises an upper valve body 2 and a lower valve body 3, the upper valve body 2 and the lower valve body 3 are detachably buckled, the installation cavity comprises an upper cavity and a lower cavity, the upper cavity extends from one end, close to the lower valve body 3, on the upper valve body 2 to the middle part of the upper valve body 2, a first channel 7 extends from one end, far away from the lower valve body 3, on the upper valve body 2 to be communicated with the upper cavity, hydraulic oil can be introduced into the upper cavity from the first channel 7 and exert pressure on the valve element 4, the lower cavity extends from one end, close to the upper valve body 2, on the lower valve body 3 to the middle part of the lower valve body 3, a second channel 8 extends from one end, far away from the upper valve body 2, on the lower valve body 3 to be communicated with the lower cavity, a water-based liquid medium can be introduced into the lower cavity from the second channel 8 and exert pressure on the valve element 4, one end of the valve element 4 extends into the upper cavity and the other end extends, when the pressure applied to the valve core 4 by the water-based liquid medium is greater than the total pressure applied to the valve core 4 in the direction of the hydraulic oil, the valve core 4 is pushed to move to the backflow channel 12 to be communicated with the second channel 8 in the direction close to the first channel 7, so that the water-based liquid medium in the first channel 7 flows out through the backflow channel 12 to provide liquid medium for hydraulic forming, when the pressure applied to the valve core 4 by the water-based liquid medium is less than the total pressure applied to the valve core 4 in the direction of the hydraulic oil, the valve core 4 is pushed to move to the backflow channel 12 in the direction close to the second channel 8 to be not communicated with the second channel 8, and the water-based liquid medium does not flow out through the backflow channel 12 any more.
Install one between upper chamber inner wall and the case 4 outer wall and go up sealing element 5, install sealing element 6 down between lower chamber inner wall and the case 4 outer wall, go up sealing element 5 and sealing element 6 down all are used for blockking the liquid intercommunication in first passageway 7 and the second passageway 8, hydraulic oil is as the control medium, water base liquid medium is as controlled medium, keep apart water base liquid medium and hydraulic oil completely through last sealing element 5 and lower sealing element 6, prevent that hydraulic oil from entering into second passageway 8 and cause the pollution to water base liquid medium, difficult clearance, also prevent simultaneously that water base liquid medium from entering into first passageway 7, cause the corruption to the hydraulic component in the control unit 1, influence whole life.
Go up and be equipped with first screw hole on valve body 2, first screw hole link up last valve body 2 on the array orientation of last valve body 2 and lower valve body 3, lower valve body 3 is equipped with the second screw hole in the position that corresponds first screw hole, the second screw hole extends to lower valve body 3 middle part from the one end that is close to last valve body 2 on the lower valve body 3, go up valve body 2 and pass first screw hole and second screw hole connection in proper order with lower valve body 3 through bolt 11, realize going up valve body 2 and being connected with dismantling of lower valve body 3, make things convenient for later stage clearance and the inspection change to case 4.
The valve core 4 is a T-shaped valve core 4, the large end of the valve core 4 is positioned in the upper chamber, the small end of the valve core 4 is positioned in the lower chamber, the second channel 8 is provided with a limiting part, the limiting part is used for limiting the maximum displacement of the valve core 4 in the length direction of the second channel 8 and preventing the valve core 4 from falling out, and when the small end of the valve core 4 contacts the limiting part, a gap is reserved between the large end of the valve core 4 and the upper end face of the lower valve body 3; a leakage backflow gap is arranged between the upper cavity and the lower cavity, the leakage backflow gap is communicated with the mounting cavity and the outside and is used for guiding out hydraulic oil or a water-based liquid medium between the large end of the valve core 4 and the lower valve body 3, when the upper sealing element 5 is not tightly sealed and the hydraulic oil flows into the gap between the upper valve body 2 and the lower valve body 3, the hydraulic oil flows out through the leakage backflow gap and is prevented from entering the second channel 8, and when the lower sealing element 6 is not tightly sealed and the water-based liquid medium leaks, the same principle is carried out, so that the isolation effect of the hydraulic oil and the water-based liquid medium is improved; in addition, the area of the end face, close to the first channel 7, of the T-shaped valve core 4 is larger than that of the end face, close to the second channel 8, of the T-shaped valve core, so that the hydraulic oil with lower pressure in the first channel 7 can control the water-based liquid medium with higher pressure in the second channel 8, the control pressure is high, the application range is wide, the application range is better, and the area of the end face of the large end of the valve core 4 is three times that of the end face of the small end of the valve core 4.
The up end of case 4 main aspects is equipped with the mounting groove, install elastic element 9 in the mounting groove, the interior bottom surface at the mounting groove is fixed to elastic element 9's one end, the interior top surface of cavity in the other end contact, and elastic element 9 is in compression state all the time, provide a pretightning force for elastic element 9 promptly, hydraulic forming accomplishes the back, stop letting in of water base liquid medium, case 4 no longer receives the propulsive power of valve body 2 that makes progress, elastic element 9 can be under the effect of elastic recovery power, to the direction push away case 4 that is close to lower valve body 3, case 4 closes second passageway 8, and is more excellent, elastic element 9 is the spring.
The cross section of return channel 12 is the L type, and include cross channel and vertical passageway, cross channel is perpendicular with second passageway 8, and cross channel runs through the one end that is close to second passageway 8 on the lower cavity, vertical passageway is perpendicular and intercommunication with cross channel, guarantee that case 4 removes when contacting second passageway 8, with the cross channel shutoff, prevent the outflow of water-based liquid medium, when case 4 removes when not contacting with second passageway 8, cross channel and 8 intercommunications of second passageway, water-based liquid medium can flow out through return channel 12, moreover, the steam generator is simple in structure, and can realize through the hydraulic principle, and control accuracy is high.
The damper 10 is arranged in the first channel 7, the damper 10 is used for slowing down the impact of the hydraulic oil on the valve core 4, when the control unit 1 controls the hydraulic oil to suddenly enter the first channel 7, the equipment is easily damaged due to sudden increase of pressure, the impact load of the hydraulic oil is restrained through the damper 10, and the use safety is improved.
The control unit 1 comprises an oil tank 13, a pump group 14, an energy storage pressure stabilizer 15, an overflow valve 16, a flow stabilizing valve 17, a pressure sensor 18 and a proportional overflow valve 19, wherein the oil tank 13 is used for storing hydraulic oil for pressure control, the oil tank 13 is communicated with the pump group 14 through a first pipeline, the pump group 14 is used for guiding the hydraulic oil in the oil tank 13 out through the pump group 14, the pump group 14 is communicated with the flow stabilizing valve 17 through a second pipeline, the pump group 14 is used for guiding the hydraulic oil in the oil tank 13 to the position of the flow stabilizing valve 17, preferably, the flow stabilizing valve 17 is a two-way flow valve, the flow size of the flow stabilizing valve can be adjusted through an adjusting knob to keep the flow constant, the flow is not influenced by pressure and temperature, the adjustment is convenient, the energy storage pressure stabilizer 15 and the overflow valve 16 are installed on the second pipeline, the overflow valve 16 is communicated with the oil tank 13 through, preferably, the energy storage stabilizer 15 is an air bag structure filled with nitrogen inside, the principle of the air bag structure is the same as that of the existing pressure stabilizing tank, when the pump unit 14 leads out hydraulic oil in the oil tank 13, the pressure in each pipeline is suddenly increased, the energy storage stabilizer 15 appropriately releases pressure in the pipeline, when the pump unit 14 is suddenly stopped, the pressure in the pipeline is suddenly reduced, the energy storage stabilizer 15 recovers to prevent the water hammer phenomenon and also prevent the pipeline from shaking to influence the safety, the overflow valve 16 is used for limiting and overflowing the hydraulic oil, the set pressure is adjusted by the adjusting knob to be matched with the energy storage stabilizer 15 to ensure that the pressure of the hydraulic oil flowing into the flow stabilizing valve 17 is stable, the pressure stabilizing valve 17 can be regarded as a constant pressure source, the flow stabilizing valve 17 is communicated with the pressure sensor 18 through a fourth pipeline, the pressure sensor 18 is used for detecting the pressure of the hydraulic oil flowing out through the flow stabilizing valve 17 as a pressure, the proportional overflow valve 19 is used for controlling overflow pressure, the proportional overflow valve 19 does not need to be set, the acting force of the proportional electromagnet is adjusted according to a control signal, namely, the overflow pressure can be adjusted according to the control signal, stepless adjustment of the overflow pressure can be realized, thereby indirectly realizing stepless adjustment of the water-based liquid medium, the adjustment precision is improved, the flow stabilizing valve 17 is communicated with the first channel 7 through a sixth pipeline, the sixth pipeline is used for leading hydraulic oil into the first channel 7, the hydraulic oil entering the first channel 7 through the sixth pipeline is accurately controlled, so that the control precision of the water-based liquid medium is improved, the proportional overflow valve 19 is communicated with the oil tank 13 through a seventh pipeline, and the overflowed hydraulic oil returns to the oil tank 13 through the seventh pipeline.
As a specific embodiment, the parameters of the pressure control device for water-based fluid media provided by the present invention are as follows:
(1) water-based liquid medium: 5% of MDT emulsified water-based liquid;
(2) control medium: no. 46 antiwear hydraulic oil;
(3) maximum control flow: 400L/min;
(4) maximum control pressure: 90 MPa;
(5) maximum rated operating pressure of the pump stack 14: 35 MPa;
(6) the energy storage voltage stabilizer 15 nitrogen charging pressure: 30 MPa;
(7) the overflow valve 16 sets pressure: 31.5 MPa;
(8) flow rate setting value of the flow stabilizing valve 17: 0.8L/min;
(9) maximum working pressure of proportional relief valve 19: 31.5 MPa.
When the valve core 4 is used, the upper end surface of the valve core 4 acts on No. 46 hydraulic oil, and the lower end surface acts on 5% MDT emulsified water base liquid. When the acting force of the emulsified water base liquid is greater than that of the hydraulic oil, the valve core 4 is opened, the water base liquid flows out through the backflow channel 12 to realize overflow, pressure drop is generated, the pressure is reduced, and the acting force on the valve core 4 is reduced; when the acting force is reduced to be equal to the acting force of a hydraulic oil medium, the valve core 4 is in a balanced state, the water-based liquid is in stable overflow, and the pressure of the water-based liquid medium is the set overflow pressure required by hydraulic forming. The hydraulic oil pressure can be steplessly regulated in a closed loop mode through the proportional relief valve 19, so that the stepless regulation of the water-based hydraulic pressure is realized.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. A pressure control device for water-based liquid media is characterized in that: the hydraulic control valve comprises a valve body, a valve core and a control unit, wherein an installation cavity is arranged in the valve body, the valve core is installed in the installation cavity, a first channel and a second channel are respectively arranged at two ends of the installation cavity, the first channel and the second channel can be communicated with the installation cavity and the outside, a backflow channel is further arranged on the valve body, two ends of the backflow channel respectively extend to the outside and one side, close to the second channel, in the installation cavity, the control unit is used for leading hydraulic oil into the installation cavity through the first channel, can control the pressure of the hydraulic oil led in the first channel and pushes the valve core to move to the direction close to the second channel so that the backflow channel is disconnected from the second channel, a water-based liquid medium is used for leading in the second channel, and pushes the valve core to move to the direction close to the first channel so that the backflow channel is disconnected from the second channel The channel is communicated, when the return channel is communicated with the second channel, the return channel is used for outflow of water-based liquid media, and the hydraulic oil and the water-based liquid media can push the valve core to reciprocate in the installation cavity and fix the position.
2. The pressure control device of a water-based fluid medium according to claim 1, characterized in that: the valve body includes valve body and lower valve body, go up the valve body with the lock can be dismantled to lower valve body, the installation cavity includes cavity and lower cavity, go up the cavity certainly go up and be close to on the valve body the one end of lower valve body extends to go up the middle part of valve body, first passageway certainly go up and keep away from on the valve body the one end of lower valve body extend to with go up the cavity intercommunication, the cavity certainly be close to down on the valve body the one end of going up the valve body extends to the middle part of lower valve body, the second passageway certainly keep away from down on the valve body the one end of going up the valve body extend to with lower cavity intercommunication, the one end of case stretches into in the cavity, the other end stretches into in the lower cavity.
3. A pressure control device of a water-based liquid medium according to claim 2, characterized in that: an upper sealing element is arranged between the inner wall of the upper chamber and the outer wall of the valve core, a lower sealing element is arranged between the inner wall of the lower chamber and the outer wall of the valve core, and the upper sealing element and the lower sealing element are used for preventing liquid in the first channel and the second channel from communicating with each other.
4. A pressure control device of a water-based liquid medium according to claim 2, characterized in that: go up to be equipped with first screw hole on the valve body, first screw hole is in go up the valve body with link up down in the array orientation of valve body go up the valve body, the valve body is corresponding down the position of first screw hole is equipped with the second screw hole, the second screw hole certainly be close to down on the valve body the one end of going up the valve body extends to down the valve body middle part, go up the valve body with the valve body passes through the bolt down in proper order first screw hole with the second screw hole is connected.
5. A pressure control device of a water-based liquid medium according to claim 2, characterized in that: the valve core is a T-shaped valve core, the large end of the valve core is positioned in the upper cavity, the small end of the valve core is positioned in the lower cavity, the second channel is provided with a limiting part, the limiting part is used for limiting the maximum displacement of the valve core in the length direction of the second channel, and when the small end of the valve core contacts the limiting part, a gap is formed between the large end of the valve core and the upper end face of the lower valve body; and a leakage backflow gap is arranged between the upper cavity and the lower cavity, and the leakage backflow gap is communicated with the mounting cavity and the outside and is used for guiding out hydraulic oil or water-based liquid medium between the large end of the valve core and the lower valve body.
6. The pressure control device of a water-based liquid medium according to claim 5, characterized in that: the upper end face of the large end of the valve core is provided with a mounting groove, an elastic element is mounted in the mounting groove, one end of the elastic element is fixed on the inner bottom face of the mounting groove, the other end of the elastic element is in contact with the inner top face of the upper cavity, and the elastic element is always in a compression state.
7. A pressure control device of a water-based liquid medium according to claim 2, characterized in that: the cross section of the backflow channel is L-shaped and comprises a transverse channel and a longitudinal channel, the transverse channel is perpendicular to the second channel, the transverse channel penetrates through one end, close to the second channel, of the lower chamber, and the longitudinal channel is perpendicular to and communicated with the transverse channel.
8. The pressure control device of a water-based fluid medium according to claim 1, characterized in that: and a damper is arranged in the first channel and used for slowing down the impact of the hydraulic oil on the valve core.
9. The pressure control device of a water-based fluid medium according to claim 1, characterized in that: the control unit comprises an oil tank, a pump group, an energy storage voltage stabilizer, an overflow valve, a current stabilizing valve, a pressure sensor and a proportional overflow valve, wherein the oil tank is used for storing hydraulic oil, the oil tank is communicated with the pump group through a first pipeline, the pump group is communicated with the current stabilizing valve through a second pipeline, the pump group is used for guiding the hydraulic oil in the oil tank into the current stabilizing valve, the energy storage voltage stabilizer and the overflow valve are installed on the second pipeline, the overflow valve is communicated with the oil tank through a third pipeline, the energy storage voltage stabilizer is used for stabilizing the pressure of the hydraulic oil in the second pipeline, the overflow valve is used for limiting and overflowing the hydraulic oil, the current stabilizing valve is communicated with the pressure sensor through a fourth pipeline, the pressure sensor is used for detecting the pressure of the hydraulic oil flowing out through the current stabilizing valve, and the current stabilizing valve is communicated with the proportional overflow valve through, the proportional overflow valve is used for controlling overflow pressure, the flow stabilizing valve is communicated with the first channel through a sixth pipeline, the sixth pipeline is used for guiding hydraulic oil into the first channel, the proportional overflow valve is communicated with the oil tank through a seventh pipeline, and overflowed hydraulic oil returns to the oil tank through the seventh pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011264956.4A CN112283423B (en) | 2020-11-13 | 2020-11-13 | Pressure control device for water-based liquid medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011264956.4A CN112283423B (en) | 2020-11-13 | 2020-11-13 | Pressure control device for water-based liquid medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112283423A true CN112283423A (en) | 2021-01-29 |
| CN112283423B CN112283423B (en) | 2022-09-09 |
Family
ID=74397934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011264956.4A Active CN112283423B (en) | 2020-11-13 | 2020-11-13 | Pressure control device for water-based liquid medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112283423B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1909338A1 (en) * | 1969-02-25 | 1970-09-10 | Bosch Gmbh Robert | Control valve |
| JP2002156067A (en) * | 2000-11-20 | 2002-05-31 | Yoshitake Inc | Pressure reducing valve |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| CN202708231U (en) * | 2012-05-30 | 2013-01-30 | 山西高行液压股份有限公司 | Hydraulic control emulsion overflow valve |
| DE102012002921A1 (en) * | 2012-02-14 | 2013-08-14 | Liebherr-Aerospace Lindenberg Gmbh | servo valve |
| CN106270098A (en) * | 2016-08-09 | 2017-01-04 | 哈尔滨工业大学 | A kind of variable mold clamping force internal high-pressure forming machine |
| CN106763899A (en) * | 2016-11-29 | 2017-05-31 | 北京林克富华技术开发有限公司 | Pressure valve and the hydraulic system with it |
| CN208417653U (en) * | 2018-04-19 | 2019-01-22 | 太原太航德克森流体控制技术有限公司 | A kind of self-operated type regulating device for fuel pressure control |
| CN109931426A (en) * | 2017-12-19 | 2019-06-25 | 中航光电科技股份有限公司 | A kind of liquid cooled module unloading crimp head and crimp head is unloaded using this |
-
2020
- 2020-11-13 CN CN202011264956.4A patent/CN112283423B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1909338A1 (en) * | 1969-02-25 | 1970-09-10 | Bosch Gmbh Robert | Control valve |
| JP2002156067A (en) * | 2000-11-20 | 2002-05-31 | Yoshitake Inc | Pressure reducing valve |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| DE102012002921A1 (en) * | 2012-02-14 | 2013-08-14 | Liebherr-Aerospace Lindenberg Gmbh | servo valve |
| CN202708231U (en) * | 2012-05-30 | 2013-01-30 | 山西高行液压股份有限公司 | Hydraulic control emulsion overflow valve |
| CN106270098A (en) * | 2016-08-09 | 2017-01-04 | 哈尔滨工业大学 | A kind of variable mold clamping force internal high-pressure forming machine |
| CN106763899A (en) * | 2016-11-29 | 2017-05-31 | 北京林克富华技术开发有限公司 | Pressure valve and the hydraulic system with it |
| CN109931426A (en) * | 2017-12-19 | 2019-06-25 | 中航光电科技股份有限公司 | A kind of liquid cooled module unloading crimp head and crimp head is unloaded using this |
| CN208417653U (en) * | 2018-04-19 | 2019-01-22 | 太原太航德克森流体控制技术有限公司 | A kind of self-operated type regulating device for fuel pressure control |
Non-Patent Citations (1)
| Title |
|---|
| 肖晓华等: "方钻杆旋塞阀故障树的建立和分析", 《机械设计与制造》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112283423B (en) | 2022-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112283423B (en) | Pressure control device for water-based liquid medium | |
| CN110671520B (en) | One-way pressure reducing valve with safety function | |
| CN109826984B (en) | Pilot-operated safety valve | |
| CN201273386Y (en) | Piston type pressure-control check valve | |
| CN212616537U (en) | Pressure reducing valve with built-in oil return one-way pressure stabilizing structure | |
| CN210484785U (en) | Self-adjusting ball valve | |
| CN210566503U (en) | Pressure control valve in liquid ammonia hydrogen production system | |
| CN110329990B (en) | Liquid ammonia hydrogen production system | |
| CN207406862U (en) | A kind of piston piloted reducer | |
| CN108894354B (en) | Displacement type mechanical pressure-control viscous damper | |
| CN214662230U (en) | Direct-acting pressure reducing valve | |
| EP3911862A1 (en) | Accumulator | |
| CN201461581U (en) | Multifunctional automatic pressure relief valve | |
| KR20120081818A (en) | Hydraulic shock absorbing tilting disc check valve | |
| CN215214166U (en) | Leakage-proof overflow valve | |
| CN205745524U (en) | A kind of convenient and practical connecting valve | |
| CN114458648B (en) | Hydraulic system parallel connection device based on Tesla valve | |
| CN205895744U (en) | But piston pneumatic cylinder of self return | |
| CN111059330A (en) | Hydraulic pressure control overflow valve | |
| WO2009075581A1 (en) | Flexible chamber | |
| CN212643211U (en) | One-way back pressure explosion-proof valve | |
| CN112728180B (en) | Nitrogen pressure-regulating pressure-reducing valve for waterway system of tunneling equipment and waterway system | |
| CN109236781B (en) | Time sequence valve | |
| CN219866424U (en) | Backflow preventing structure and check valve | |
| CN218935400U (en) | Pipeline protection device under medium-pressure environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |